import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class Pic_show extends Applet implements ActionListener
{
Button pic_first,pic_next,pic_forword,pic_last,pic_goto,pic_fangda,pic_suoxiao,
mid_play,mid_loop,mid_stop;
static int number=10;
static int count=0;
static int pan;
Label yeshu;
AudioClip clip;
TextField text1;
static Image[] card=new Image[number];
Mycanvas canvas;
static String str=String.valueOf(count);
public void init()
{ setLayout(new BorderLayout());
FlowLayout flow=new FlowLayout();
flow.setAlignment(FlowLayout.CENTER);
clip=getAudioClip(getCodeBase(),"mytest.mid");
text1=new TextField("1",2);
Panel p1=new Panel();
Panel p2=new Panel();
p1.setLayout(flow);
p2.setLayout(flow);
pic_first=new Button("第一张");
pic_forword=new Button("上一张");
pic_next=new Button("下一张");
pic_last=new Button("最后一张");
pic_goto=new Button("转到");
pic_fangda=new Button("放大");
pic_suoxiao=new Button("缩小");
mid_play=new Button("开始播放");
mid_loop=new Button("循环播放");
mid_stop=new Button("停止播放");
canvas=new Mycanvas();
add(p2,BorderLayout.SOUTH);
add(canvas,BorderLayout.CENTER);
add(p1,BorderLayout.NORTH);
String bbb=String.valueOf(number);
yeshu=new Label("1");
p1.add(yeshu);
p1.add(new Label("/"));
p1.add(new Label(bbb));
p1.add(pic_first);
p1.add(pic_forword);
p1.add(pic_next);
p1.add(pic_last);
p1.add(text1);
p1.add(pic_goto);
p1.add(pic_fangda);
p1.add(pic_suoxiao);
p2.add(mid_play);
p2.add(mid_loop);
p2.add(mid_stop);
pic_first.addActionListener(this);
pic_forword.addActionListener(this);
pic_next.addActionListener(this);
pic_last.addActionListener(this);
pic_goto.addActionListener(this);
pic_fangda.addActionListener(this);
pic_suoxiao.addActionListener(this);
mid_play.addActionListener(this);
mid_loop.addActionListener(this);
mid_stop.addActionListener(this);
for(int i=0;i<number;i++)
{ card[i]=getImage(getCodeBase(),"a"+(i+1)+".gif"); }
}
public void stop()
{clip.stop();}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==pic_first)
{ pan=0;
count=0;
yeshu.setText(String.valueOf(count+1));
text1.setText(String.valueOf(count+1));
pic_forword.setEnabled(false);
canvas.repaint();
pic_next.setEnabled(true);
}
else if(e.getSource()==pic_forword)
{ pan=0;
if(count<=0)
{pic_forword.setEnabled(false);}
else
{count--;
yeshu.setText(String.valueOf(count+1));
text1.setText(String.valueOf(count+1));
canvas.repaint();
pic_next.setEnabled(true);}
}
else if(e.getSource()==pic_next)
{ pan=0;
if (count>=number-1)
{pic_next.setEnabled(false);}
else
{count++;
yeshu.setText(String.valueOf(count+1));
text1.setText(String.valueOf(count+1));
canvas.repaint();
pic_forword.setEnabled(true);
}
}
else if(e.getSource()==pic_last)
{ pan=0;
count = number-1;
pic_next.setEnabled(false);
canvas.repaint();
pic_forword.setEnabled(true);
yeshu.setText(String.valueOf(count+1));
text1.setText(String.valueOf(count+1));
}
else if(e.getSource()==pic_goto||e.getSource()==text1)
{ pan=0;
int num=0;
try
{num=Integer.parseInt(text1.getText());}
catch(NumberFormatException event)
{text1.setText("张数");}
count=num-1;
yeshu.setText(String.valueOf(count+1));
canvas.repaint();
}
else if(e.getSource()==pic_fangda)
{
pan=1;
canvas.repaint();
}
else if(e.getSource()==pic_suoxiao)
{
pan=2;
canvas.repaint();
}
else if(e.getSource()==mid_play)
{
clip.play();
}
else if(e.getSource()==mid_loop)
{
clip.loop();
}
if(e.getSource()==mid_stop)
{
clip.stop();
}
}
}
class Mycanvas extends Canvas
{
float width, height, pWidth, pHeight,bi;
public void paint(Graphics g)
{
if((Pic_show.card[Pic_show.count])!=null)
{
if(Pic_show.pan==0)
{
width = Pic_show.card[Pic_show.count].getWidth(this);
height = Pic_show.card[Pic_show.count].getHeight(this);
pWidth = getSize().width-20;
pHeight = getSize().height-20;
if(width>=pWidth || height>=pHeight)
{
float x = height/width;
if(x >= 0.75)
{
width = width*pHeight/height;
height = pHeight;
}
else
{
height = height*pWidth/width;
width = pWidth;
}
}
g.drawImage(Pic_show.card[Pic_show.count], (int)(pWidth-width+20)/2, 10, (int)width, (int)height, this);}
else if(Pic_show.pan==1)
{ bi=width/height;
height=(int)(width*1.1/bi);
width=(int)(width*1.1);
g.drawImage(Pic_show.card[Pic_show.count], (int)(pWidth-width+20)/2, 10, (int)width, (int)height, this);
}
else if(Pic_show.pan==2)
{ bi=width/height;
height=(int)(width*0.9/bi);
width=(int)(width*0.9);
g.drawImage(Pic_show.card[Pic_show.count], (int)(pWidth-width+20)/2, 10, (int)width, (int)height, this);
}
}
}
}
JSP源码 图片浏览小程序(java+applet).zip （25个子文件） 
图片浏览小程序(java+applet) pic_show classes 
MidiMain.class 2KB MyFrame.class 4KB Huan.class 178B mytest.mid 6KB
a1.gif 123KB a9.gif 115KB Pic_show.class 4KB MidiMain$1.class 428B Pic_show.htm 172B a5.gif 119KB pic_mid.class 369B a7.gif 130KB a8.gif 99KB a2.gif 130KB auto.class 1KB a10.gif 104KB a6.gif 118KB a3.gif 122KB a4.gif 100KB Mycanvas.class 2KB src Pic_show.class 2KB Pic_show.java 6KB Mycanvas.class 1011B Pic_show.jcp 957B fsf.java 2KB资源评论
